But, if the character set isn't known/can't be detected and you have no choice but to deal with dirty data, this is probably the simplest solution. So it's still best to convert the encoding of the parameters to be the same first. For instance, ド in Windows-1252 will match ド from the above string. var_export ( mb_str_contains ( $string, $contains2 ), true ). The example you gave isnt very good, because the string between 'm' and 'y' (inclusive) is 'my'. var_export ( str_contains ( $string, $contains2 ), true ). var_export ( mb_str_contains ( $string, $contains ), true ). var_export ( str_contains ( $string, $contains ), true ). We can compare str_contains to the above suggested function: I used mb_substr_count() instead of mb_strpos() because mb_strpos() will still match partial characters as it's doing a binary search. for example, removing string at the end of the following strings : 'this is a test string' -> 'this. Here's a "mb_*"-esque function that searches the string: I need to remove a substring of a string, but only when it is at the END of the string. PHP strstr() Function looks for the first occurrence of a substring inside the main string and returns it. This won't be a concern for most people, but if you are mixing old and new data, especially if reading data from a file, it could be an issue. This function doesn't always produce the expected results if you have a needle that isn't UTF-8 but are looking for it in a UTF-8 string. for example, removing 'string' at the end of the following strings : 'this is a test string' -> 'this. If the length is positive, that length of string will be returned (at most).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 search I need to remove a substring of a string, but only when it is at the END of the string. If length is negative, that amount of strings will be removed from the input string. The length parameter is more or less optional and indicates the length of the substring to be returned after the offset has been set. If the offset is greater than the length of the input string, the substring to be returned will be empty. If offset is non-negative, the start of the substring will be the beginning of the string to the offset’th position when counting from zero. If The offset is negative, the substring will be formed starting from the end of the string to end at the offset’th position when counting from zero. It indicates the position from which the substring is to start. Below the procedures are explained with the example. The offset parameter is the second parameter. To get a substring between two strings there are few popular ways to do so. The first parameter is the string input from which the subtring is to be extracted. Use the operators or to differ FALSE from 0 in PHP. It will return the position where it was found, otherwise will return FALSE. Substr() is a string manipulation function that will return a substring from the string that was passed based on other parameters of the function that was passed. You can use strpos () or stripos () to check if the string contain the given needle. One such function is the substr() function. There are several functions in PHP that are used to manipulate strings in PHP.
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