Usage of strcmp function in php

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Release: 2023-02-28 19:40:01
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Usage of strcmp function in php

strcmp function usage in php

strcmp definition and usage

## The #strcmp() function compares two strings.

Note: The strcmp() function is binary safe and case-sensitive.

Tip: This function is similar to the strncmp() function, except that with strncmp() you can specify the number of characters for each string to be compared.

Syntax

strcmp(string1,string2)
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Parameters

string1 Required. Specifies the first string to compare.

string2 Required. Specifies the second string to be compared.

Usage of strcmp function in php

Example 1

Compare two strings (case sensitive, Hello and hELLo output are different):

<?php
echo strcmp("Hello","Hello");
echo "<br>";
echo strcmp("Hello","hELLo");
?>
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Output:

0
-1
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Example 2

Different return values:

<?php
echo strcmp("Hello world!","Hello world!"); // 两字符串相等
echo strcmp("Hello world!","Hello"); // string1 大于 string2
echo strcmp("Hello world!","Hello world! Hello!"); // string1 小于 string2
?>
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Output:

0
7
-7
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