เอาส่วนหนึ่งของข้อความใน php

รหัสตัวอย่าง

32
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substr()php


<?php
echo substr('abcdef', 1);     // bcdef
echo substr('abcdef', 1, 3);  // bcd
echo substr('abcdef', 0, 4);  // abcd
echo substr('abcdef', 0, 8);  // abcdef
echo substr('abcdef', -1, 1); // f

// Accessing single characters in a string
// can also be achieved using "square brackets"
$string = 'abcdef';
echo $string[0];                 // a
echo $string[3];                 // d
echo $string[strlen($string)-1]; // f

?>

//substr() function returns certain bits of a string 
4
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php ได้ส่วนหนึ่งของข้อความ

substr ( $string , $start , $length  );

/**Returns the extracted part of string;
  *or FALSE on failure, or an empty string
  */
0
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php ข้อความเป็นส่วนนึง

<?php
$str = "Africa Beautiful!";
echo substr($str, 0, 6);  // Outputs: Africa
echo substr($str, 0, -10); // Outputs: Beautiful
echo substr($str, 0);     // Outputs: Africa Beautiful!
?>

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