Replace string in file using PHP and preg_replace function

Question

2.00/5 (1 vote)

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Hi i have a txt file and i want to use php to make some changes

example.:

var="Test need to change"

I want to find string Test and change the rest of sentence

when finish it sould be

var="Test changed text".

What I have tried:

Replace string in file using PHP and preg_replace function

Posted 26-Jan-17 0:47am

kdaras

Updated 26-Jan-17 2:16am

Afzaal Ahmad Zeeshan

v2

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Comments

Patrice T 26-Jan-17 6:51am

Did you try something ?
What is the question ?

kdaras 26-Jan-17 7:10am

I have try preg_replace('/(pattern)X*/', $_POST['name'], $file_contents) but
this is the opposite of what i'm asking

3 solutions

Solution 1

See PHP: str_replace - Manual[^].

Posted 26-Jan-17 0:49am

Richard MacCutchan

Comments

kdaras 26-Jan-17 7:09am

I have seen PHP: str_replace - Manual[^] but i didn't find an example of what i'm asking

Richard MacCutchan 26-Jan-17 7:35am

Try using substr or substr_replace. It is not clear where your problem lies in doing what is a very simple replacement.

kdaras 26-Jan-17 7:45am

in the sentence "Test some kind o text " i want to find string Test
and change the rest of sentence leaving Test string as it is.

Richard MacCutchan 26-Jan-17 7:53am

There is an example of a similar replacement method on the preg_replace manual page.

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Jochen Arndt · Accepted Answer · 2017-01-26T02:16:00

Solution 4

You need to use a back reference to include the matched string in the result:

PHP

<?php
$string = 'Test need to change';
$pattern = '/(Test).*/';
$insert = 'changed text';
$replacement = "$1 $insert";
echo preg_replace($pattern, $replacement, $string);
?>

Posted 26-Jan-17 2:16am

Jochen Arndt

kdaras · Accepted Answer · 2017-01-26T02:10:00

Solution 3

OK i find the solution thanks for help

preg_replace('/(pattern)X*.*/', $_POST['name'], $file_contents) but

Posted 26-Jan-17 2:10am

kdaras