Bug: ErrorException: Passing null to strtolower() is deprecated in php8.1 #5436

Closed
Closed
Bug: ErrorException: Passing null to strtolower() is deprecated in php8.1#5436

Description

@RussellJapheth
RussellJapheth
opened on Dec 4, 2021

PHP Version

8.1

CodeIgniter4 Version

4.1.5

CodeIgniter4 Installation Method

Composer (using codeigniter4/appstarter)

Which operating systems have you tested for this bug?

Linux

Which server did you use?

cli-server (PHP built-in webserver)

Database

No response

What happened?

An ErrorException is thrown when accessing the controller. The message is:
strtolower(): Passing null to parameter #1 ($string) of type string is deprecated

Steps to Reproduce

Start the built-in server using $ php8.1 spark serve
Open up any route in the browser

Expected Output

The HTML that the controller outputs is expected

Anything else?

The error appears to be thrown because in SYSTEMPATH/Validation/FormatRules.php at line 253 the strtolower() function is passed a variable $which which can be null, and passing null to strtolower() is deprecated in php8.1

Activity

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      No branches or pull requests

      Issue actions

      , 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
       blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

      Skip to content
      Bug: ErrorException: Passing null to strtolower() is deprecated in php8.1 #5436
      Closed
      Closed
      Bug: ErrorException: Passing null to strtolower() is deprecated in php8.1#5436
      Description
      @RussellJapheth
      RussellJapheth
      opened on Dec 4, 2021
      PHP Version
      8.1
      CodeIgniter4 Version
      4.1.5
      CodeIgniter4 Installation Method
      Composer (using codeigniter4/appstarter)
      Which operating systems have you tested for this bug?
      Linux
      Which server did you use?
      cli-server (PHP built-in webserver)
      Database
      No response
      What happened?
      An ErrorException is thrown when accessing the controller. The message is:
      strtolower(): Passing null to parameter #1 ($string) of type string is deprecated
      Steps to Reproduce
      Start the built-in server using $ php8.1 spark serve
      
Open up any route in the browser
      Expected Output
      The HTML that the controller outputs is expected
      Anything else?
      The error appears to be thrown because in SYSTEMPATH/Validation/FormatRules.php at line 253 the strtolower() function is passed a variable $which which can be null, and passing null to strtolower() is deprecated in php8.1
      Activity
      Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
      Metadata
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      Assignees
      No one assigned
        Labels
        No labels
        No labels
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        No type
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        No projects
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          No milestone
          Relationships
          None yet
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          No branches or pull requests
          Issue actions
          
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

          Skip to content
          Bug: ErrorException: Passing null to strtolower() is deprecated in php8.1 #5436
          Closed
          Closed
          Bug: ErrorException: Passing null to strtolower() is deprecated in php8.1#5436
          Description
          @RussellJapheth
          RussellJapheth
          opened on Dec 4, 2021
          PHP Version
          8.1
          CodeIgniter4 Version
          4.1.5
          CodeIgniter4 Installation Method
          Composer (using codeigniter4/appstarter)
          Which operating systems have you tested for this bug?
          Linux
          Which server did you use?
          cli-server (PHP built-in webserver)
          Database
          No response
          What happened?
          An ErrorException is thrown when accessing the controller. The message is:
          strtolower(): Passing null to parameter #1 ($string) of type string is deprecated
          Steps to Reproduce
          Start the built-in server using $ php8.1 spark serve
          
Open up any route in the browser
          Expected Output
          The HTML that the controller outputs is expected
          Anything else?
          The error appears to be thrown because in SYSTEMPATH/Validation/FormatRules.php at line 253 the strtolower() function is passed a variable $which which can be null, and passing null to strtolower() is deprecated in php8.1
          Activity
          Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
          Metadata
          Metadata
          Assignees
          No one assigned
            Labels
            No labels
            No labels
            Type
            No type
            Projects
            No projects
              Milestone
              No milestone
              Relationships
              None yet
              Development
              No branches or pull requests
              Issue actions
              
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

              Skip to content
              Bug: ErrorException: Passing null to strtolower() is deprecated in php8.1 #5436
              Closed
              Closed
              Bug: ErrorException: Passing null to strtolower() is deprecated in php8.1#5436
              Description
              @RussellJapheth
              RussellJapheth
              opened on Dec 4, 2021
              PHP Version
              8.1
              CodeIgniter4 Version
              4.1.5
              CodeIgniter4 Installation Method
              Composer (using codeigniter4/appstarter)
              Which operating systems have you tested for this bug?
              Linux
              Which server did you use?
              cli-server (PHP built-in webserver)
              Database
              No response
              What happened?
              An ErrorException is thrown when accessing the controller. The message is:
              strtolower(): Passing null to parameter #1 ($string) of type string is deprecated
              Steps to Reproduce
              Start the built-in server using $ php8.1 spark serve
              
Open up any route in the browser
              Expected Output
              The HTML that the controller outputs is expected
              Anything else?
              The error appears to be thrown because in SYSTEMPATH/Validation/FormatRules.php at line 253 the strtolower() function is passed a variable $which which can be null, and passing null to strtolower() is deprecated in php8.1
              Activity
              Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
              Metadata
              Metadata
              Assignees
              No one assigned
                Labels
                No labels
                No labels
                Type
                No type
                Projects
                No projects
                  Milestone
                  No milestone
                  Relationships
                  None yet
                  Development
                  No branches or pull requests
                  Issue actions
                  
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

                  Skip to content
                  Bug: ErrorException: Passing null to strtolower() is deprecated in php8.1 #5436
                  Closed
                  Closed
                  Bug: ErrorException: Passing null to strtolower() is deprecated in php8.1#5436
                  Description
                  @RussellJapheth
                  RussellJapheth
                  opened on Dec 4, 2021
                  PHP Version
                  8.1
                  CodeIgniter4 Version
                  4.1.5
                  CodeIgniter4 Installation Method
                  Composer (using codeigniter4/appstarter)
                  Which operating systems have you tested for this bug?
                  Linux
                  Which server did you use?
                  cli-server (PHP built-in webserver)
                  Database
                  No response
                  What happened?
                  An ErrorException is thrown when accessing the controller. The message is:
                  strtolower(): Passing null to parameter #1 ($string) of type string is deprecated
                  Steps to Reproduce
                  Start the built-in server using $ php8.1 spark serve
                  
Open up any route in the browser
                  Expected Output
                  The HTML that the controller outputs is expected
                  Anything else?
                  The error appears to be thrown because in SYSTEMPATH/Validation/FormatRules.php at line 253 the strtolower() function is passed a variable $which which can be null, and passing null to strtolower() is deprecated in php8.1
                  Activity
                  Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
                  Metadata
                  Metadata
                  Assignees
                  No one assigned
                    Labels
                    No labels
                    No labels
                    Type
                    No type
                    Projects
                    No projects
                      Milestone
                      No milestone
                      Relationships
                      None yet
                      Development
                      No branches or pull requests
                      Issue actions
                      
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

                      Skip to content
                      Bug: ErrorException: Passing null to strtolower() is deprecated in php8.1 #5436
                      Closed
                      Closed
                      Bug: ErrorException: Passing null to strtolower() is deprecated in php8.1#5436
                      Description
                      @RussellJapheth
                      RussellJapheth
                      opened on Dec 4, 2021
                      PHP Version
                      8.1
                      CodeIgniter4 Version
                      4.1.5
                      CodeIgniter4 Installation Method
                      Composer (using codeigniter4/appstarter)
                      Which operating systems have you tested for this bug?
                      Linux
                      Which server did you use?
                      cli-server (PHP built-in webserver)
                      Database
                      No response
                      What happened?
                      An ErrorException is thrown when accessing the controller. The message is:
                      strtolower(): Passing null to parameter #1 ($string) of type string is deprecated
                      Steps to Reproduce
                      Start the built-in server using $ php8.1 spark serve
                      
Open up any route in the browser
                      Expected Output
                      The HTML that the controller outputs is expected
                      Anything else?
                      The error appears to be thrown because in SYSTEMPATH/Validation/FormatRules.php at line 253 the strtolower() function is passed a variable $which which can be null, and passing null to strtolower() is deprecated in php8.1
                      Activity
                      Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
                      Metadata
                      Metadata
                      Assignees
                      No one assigned
                        Labels
                        No labels
                        No labels
                        Type
                        No type
                        Projects
                        No projects
                          Milestone
                          No milestone
                          Relationships
                          None yet
                          Development
                          No branches or pull requests
                          Issue actions
                          
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

                          Skip to content
                          Bug: ErrorException: Passing null to strtolower() is deprecated in php8.1 #5436
                          Closed
                          Closed
                          Bug: ErrorException: Passing null to strtolower() is deprecated in php8.1#5436
                          Description
                          @RussellJapheth
                          RussellJapheth
                          opened on Dec 4, 2021
                          PHP Version
                          8.1
                          CodeIgniter4 Version
                          4.1.5
                          CodeIgniter4 Installation Method
                          Composer (using codeigniter4/appstarter)
                          Which operating systems have you tested for this bug?
                          Linux
                          Which server did you use?
                          cli-server (PHP built-in webserver)
                          Database
                          No response
                          What happened?
                          An ErrorException is thrown when accessing the controller. The message is:
                          strtolower(): Passing null to parameter #1 ($string) of type string is deprecated
                          Steps to Reproduce
                          Start the built-in server using $ php8.1 spark serve
                          
Open up any route in the browser
                          Expected Output
                          The HTML that the controller outputs is expected
                          Anything else?
                          The error appears to be thrown because in SYSTEMPATH/Validation/FormatRules.php at line 253 the strtolower() function is passed a variable $which which can be null, and passing null to strtolower() is deprecated in php8.1
                          Activity
                          Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
                          Metadata
                          Metadata
                          Assignees
                          No one assigned
                            Labels
                            No labels
                            No labels
                            Type
                            No type
                            Projects
                            No projects
                              Milestone
                              No milestone
                              Relationships
                              None yet
                              Development
                              No branches or pull requests
                              Issue actions
                              
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

                              Skip to content
                              Bug: ErrorException: Passing null to strtolower() is deprecated in php8.1 #5436
                              Closed
                              Closed
                              Bug: ErrorException: Passing null to strtolower() is deprecated in php8.1#5436
                              Description
                              @RussellJapheth
                              RussellJapheth
                              opened on Dec 4, 2021
                              PHP Version
                              8.1
                              CodeIgniter4 Version
                              4.1.5
                              CodeIgniter4 Installation Method
                              Composer (using codeigniter4/appstarter)
                              Which operating systems have you tested for this bug?
                              Linux
                              Which server did you use?
                              cli-server (PHP built-in webserver)
                              Database
                              No response
                              What happened?
                              An ErrorException is thrown when accessing the controller. The message is:
                              strtolower(): Passing null to parameter #1 ($string) of type string is deprecated
                              Steps to Reproduce
                              Start the built-in server using $ php8.1 spark serve
                              
Open up any route in the browser
                              Expected Output
                              The HTML that the controller outputs is expected
                              Anything else?
                              The error appears to be thrown because in SYSTEMPATH/Validation/FormatRules.php at line 253 the strtolower() function is passed a variable $which which can be null, and passing null to strtolower() is deprecated in php8.1
                              Activity
                              Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
                              Metadata
                              Metadata
                              Assignees
                              No one assigned
                                Labels
                                No labels
                                No labels
                                Type
                                No type
                                Projects
                                No projects
                                  Milestone
                                  No milestone
                                  Relationships
                                  None yet
                                  Development
                                  No branches or pull requests
                                  Issue actions