lixlpixel php code snippets | string handling


some useful functions to replace strings in strings

   

 <?php

   

   // Multiple string replace

   // expects an array with $string => $replacement

   $old_string = 'file_example.txt<br>another_file.txt<br>phpexample.php<br>';

   $replacements = array('_'=>' ','<br>'=>' ,','.txt'=>' (Text)','.php'=>' (PHP)');

   $new_string = strtr($old_string,$replacements);

   echo $new_string;

   

   echo '<hr>';

   

   // Number Padding, PHP

   // Doesn't have to be zeros or numberic but handy for making sure you keep leading zeros on

   // day and month values when receiving such values as POST or GET variables.

   $no_a = 3;

   $no_a = str_pad($no_a, 2, '0', STR_PAD_LEFT);

   echo $no_a;

   

   echo '<hr>';

   

   // String replacing, PHP

   $old_string = 'the qick brown fox jumped over the lazy dog.';

   $new_string = str_replace('qick brown fox', 'slow black bear', $old_string);

   echo $new_string;

   

   echo '<hr>';

   

   // Remove tags using preg_replace, PHP

   // This should remove anything and everything everything between

   // 'less than' and 'greater than' characters

   $source_string = '<b>bold</b> <a href="blank.php">link</a>';

   $replacement = '(tag removed)';

   $replaced_string = preg_replace('[<.*?.>]', $replacement, $source_string);

   echo $replaced_string;

  

   echo '<hr>';

   

   // preg_replace can be used with arrays as well

   $string = "The quick brown fox jumped over the lazy dog.";

   $patterns = array('/quick/','/brown/','/fox/');

   $replacements = array('slow','black','bear');

   echo preg_replace($patterns, $replacements, $string);

   

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