How php removes part of a string
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Php to remove part of the string method: 1, create a PHP sample file; 2, define a string; 3, through the str_replace function to remove a part of the string.
This article operating environment: windows7 system, PHP7.1 version, DELL G3 computer
How does php remove part of a string?
Code implementation:
$str = 'abc123abc';echo str_replace (' 123,'', $str)
Introduction to str_replace ():
The str_replace () function replaces some characters in the string with other characters (case sensitive).
The function must follow the following rules:
If the search string is an array, it returns the array.
If the search string is an array, it will find and replace each element in the array.
If the array needs to be found and replaced at the same time, and the number of elements that need to be replaced is less than the number of elements found, then the remaining elements will be replaced with an empty string
If you are looking for an array and replacing a string, the alternative string will have an effect on all found values.
Note: this function is case sensitive. Use the str_ireplace () function to perform a case-insensitive search.
Note: this function is binary safe.
Grammar
Str_replace (find,replace,string,count)
Parameters:
Find is required. Specifies the value to look for.
Replace is required. Specifies the value that replaces the value in find.
String is required. Specifies the string to be searched.
Count is optional. A variable that counts the number of substitution.
Return value: returns a string or array with a replacement value.
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