php substr_replace() function
Translation results：
UK[rɪˈpleɪs] US[rɪˈples]
vt.Replace; replace; put... back into its original place; (with...) replace
Third person singular: replaces Present participle: replacing Past tense: replaced Past participle: replaced
php substr_replace() functionsyntax
Function:Replace a string in a string with another string
Syntax: substr_replace(string,replacement,start,length)
Parameters:
| Parameter | Description |
| string | ##Required. Specifies the string to check.|
| Required. Specifies the string to be inserted. | |
| Required. Specifies where in the string to begin replacement. Positive number - starts replacement at the specified position in the string, negative number - starts replacement at the specified position from the end of the string, 0 - starts replacement at the first character in the string. | |
| Optional. Specifies how many characters to replace. The default is the same as the string length. Positive number - the length of the string to be replaced, negative number - the number of characters from the end of the substring to be replaced to the end of string . 0 - Insert instead of replace |
# Description: Replace part of a string with another string. If the start parameter is negative and length is less than or equal to start, length is 0. This function is binary safe.
php substr_replace() functionexample
<?php
echo substr_replace("Hello world","php.cn",6);
?>Run instance»
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Output:
Hello php.cn
<?php $i = "i like JavaScript"; echo substr_replace($i,"php",7); ?>
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Output:
i like php