![]() ![]() Prints only the file name if a file contains a match. Prints the line number of each line that matches. Prints only lines that don't contain a match. Ignores the case of the characters when searching for the string. Searches the current directory and all subdirectories. Processes search strings as regular expressions. ![]() Matches the text pattern if it is at the end of a line. Matches the text pattern if it is at the beginning of a line. If( strtolower ( substr ( $fimage, 0, 4 )) = 'http' || strtolower ( substr ( $fimage, 0, 4 )) = 'Syntax findstr ] ![]() In my CMS, I am using it with those lines: Here a function to check if a certain URL exist: SEE ALSO: about O_CREAT|O_EXCL (which is used with the 'x' modifier for fopen()) and problems with NFS Be sure to unlock and fclose() the file AFTER you're done with it, and not within the above function: NOTE: This method fails if the above function is not used for checking in all other scripts/processes as it doesn't actually lock the file.įIX: You could flock() the file to prevent that (although all other scripts similarly must check it with flock() then, see ). This step is purposely omitted from the function as to let scripts do calculations all the while being sure the file won't be "seized" by another process. IMPORTANT: The file will remain on the disk if it was successfully created and you must clean up after you, f.ex. The function will create a file if non-existent, following calls will fail because the file exists (in effect being a lock). The following function is a good solution: ![]() Getting Started Introduction A simple tutorial Language Reference Basic syntax Types Variables Constants Expressions Operators Control Structures Functions Classes and Objects Namespaces Enumerations Errors Exceptions Fibers Generators Attributes References Explained Predefined Variables Predefined Exceptions Predefined Interfaces and Classes Predefined Attributes Context options and parameters Supported Protocols and Wrappers Security Introduction General considerations Installed as CGI binary Installed as an Apache module Session Security Filesystem Security Database Security Error Reporting User Submitted Data Hiding PHP Keeping Current Features HTTP authentication with PHP Cookies Sessions Dealing with XForms Handling file uploads Using remote files Connection handling Persistent Database Connections Command line usage Garbage Collection DTrace Dynamic Tracing Function Reference Affecting PHP's Behaviour Audio Formats Manipulation Authentication Services Command Line Specific Extensions Compression and Archive Extensions Cryptography Extensions Database Extensions Date and Time Related Extensions File System Related Extensions Human Language and Character Encoding Support Image Processing and Generation Mail Related Extensions Mathematical Extensions Non-Text MIME Output Process Control Extensions Other Basic Extensions Other Services Search Engine Extensions Server Specific Extensions Session Extensions Text Processing Variable and Type Related Extensions Web Services Windows Only Extensions XML Manipulation GUI Extensions Keyboard Shortcuts ? This help j Next menu item k Previous menu item g p Previous man page g n Next man page G Scroll to bottom g g Scroll to top g h Goto homepage g s Goto searchįile_exists() is vulnerable to race conditions and clearstatcache() is not adequate to avoid it. ![]()
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