Php strcspn
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PHP function strcspn
This function returns the number of characters found before the search key.
Syntax strcspn
- string: string to input.
- char: search character key.
- start: specifies where in string to start
- length: width of the string to search
strcspn(string,char,start,length)
Example 1
<?php
//12
$c1 = strcspn('gok', 'k'); //2
//123
$c2 = strcspn('gook', 'k'); //3
//1234
$c3 = strcspn('goook', 'k'); //4
//12345
$c4 = strcspn('gooook', 'k'); //5
//123456
$c5 = strcspn('goooook', 'k'); //6
echo '$c1: ' . $c1 . '<br/>';
echo '$c2: ' . $c2 . '<br/>';
echo '$c3: ' . $c3 . '<br/>';
echo '$c4: ' . $c4 . '<br/>';
echo '$c5: ' . $c5 . '<br/>';
?>
Output
$c1: 2 $c2: 3 $c3: 4 $c4: 5 $c5: 6
Example 2
<?php
echo strcspn('excellent', 'l', 2, 2);
?>
Output
2
Example 3
<?php
//12
echo strcspn('a0e', 'e', 2) . '<br/>';
//12x
echo strcspn('a00e', 'e', 2) . '<br/>';
//12xx
echo strcspn('a000e', 'e', 2) . '<br/>';
//12xxx
echo strcspn('a0000e', 'e', 2) . '<br/>';
?>
Output
0 1 2 3
Example 4: Search start at location 2, and the lenght of the search string
<?php
//12
echo strcspn('a0e', 'e', 2,2) . '<br/>';
//12x
echo strcspn('a00e', 'e', 2,2) . '<br/>';
//12xx
echo strcspn('a000e', 'e', 2,2) . '<br/>';
//12xxx
echo strcspn('a0000e', 'e', 2,2) . '<br/>';
?>
Output
0 1 2 2
