PHP strcasecmp() Function
Example
Compare two strings (case-insensitive):
<?php
echo strcasecmp("Hello world!","HELLO WORLD!");
?>
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Definition and Usage
The strcasecmp() function compares two strings.
Tip: The strcasecmp() function is binary-safe and case-insensitive.
Tip: This function is similar to the strncasecmp() function, with the difference that you can specify the number of characters from each string to be used in the comparison with strncasecmp().
Syntax
strcasecmp(string1,string2)
| Parameter | Description |
|---|---|
| string1 | Required. Specifies the first string to compare |
| string2 | Required. Specifies the second string to compare |
Technical Details
| Return Value: | This function returns:
|
|---|---|
| PHP Version: | 4+ |
More Examples
Example 1
Compare two strings (case-insensitive = HELLO and hELLo will output the same):
<?php
echo strcasecmp("Hello","HELLO");
echo "<br>";
echo strcasecmp("Hello","hELLo");
?>
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Example 2
Different return values:
<?php
echo strcasecmp("Hello world!","HELLO WORLD!"); // The two strings are equal
echo strcasecmp("Hello world!","HELLO"); // String1 is greater than string2
echo strcasecmp("Hello world!","HELLO WORLD! HELLO!"); // String1 is less
than string2
?>
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PHP String Reference
