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How to specify positional replacement in php?
Using the substr_replace() function
Definition and usage
The substr_replace() function replaces part of a string with another string.
Syntaxsubstr_replace(string,replacement,start,length)
<?php教程 echo substr_replace("hello world","earth",6); ?>
string Required. Specifies the string to check
replacement Required. Specifies the string to be inserted.
start Required. Specifies where in the string to start replacing
Optional. Specifies how many characters to replace.
Recommended tutorial: "php tutorial"
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