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here are some of the best and useful php scripts and snippets to help in your projects. Php displayed below. Use the search for specific script lookups. Click the category links to view scripts in Javascript and cgi. To add your own script click the link and add your useful script example.
delete file line search delimited csv field value
delete file line csv field value
<?php
function delete_line($file,$field_num,$field_val,$delimiter=';'){
if(isset($file,$field_num,$field_val)){
$f = fopen($file . '.lock', 'w');
flock($f, LOCK_SH);
$contents = file($file);
flock($f, LOCK_UN);
fclose($f);
$rows = count($contents);
for ( $i = 0; $i < $rows; $i++ ){
$field = explode($delimiter, trim($contents[$i]));
if($field_val== $field[$field_num]) {
unset($contents[$i]);
}}
$filerep = implode("", $contents);
$filerep = preg_replace("/(^[\r\n]*|[\r\n]+)[\s\t]*[\r\n]+/", "\n", $filerep);
if(file_put_contents($file,$filerep,LOCK_EX)){
return true;
}}}
$file='cart-data.txt';
// file - column index number - column value
delete_line($file, '4', 'string to match');
?>