PHP stristr () function
Examples
Find "world" in the first occurrence, and returns the remainder of the string "Hello world!":
<?php
echo stristr("Hello world!","WORLD");
?>
echo stristr("Hello world!","WORLD");
?>
Running instance »
Definition and Usage
stristr () function searches for a string in another string of the first occurrence.
Note: This function is binary safe.
Note: This function is not case-sensitive.For a case-sensitive search, use the strstr () function.
grammar
stristr( string,search,before_search )
参数 | 描述 |
---|---|
string | 必需。规定被搜索的字符串。 |
search | 必需。规定所搜索的字符串。如果该参数是数字,则搜索匹配该数字对应的 ASCII 值的字符。 |
before_search | 可选。一个默认值为 "false" 的布尔值。如果设置为 "true",它将返回 search 参数第一次出现之前的字符串部分。 |
technical details
return value: | The remaining portion of the returned string (from the matching point). If the search string is not found, it returns FALSE. |
---|---|
PHP version: | 4+ |
Update log: | In PHP 5.3, add the before_search parameters. In PHP 4.3, the function becomes binary safe. |
More examples
Example 1
Through the "o" in the ASCII value of the search string, and returns the remainder of the string:
<?php
echo stristr("Hello world!",111);
?>
echo stristr("Hello world!",111);
?>
Running instance »
Example 2
Returns the "world" part of the string before the first occurrence of:
<?php
echo stristr("Hello world!","WORLD",true);
?>
echo stristr("Hello world!","WORLD",true);
?>
Running instance »