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elapez
Asked: 2020-06-28 15:15:44 +0800 CST 2020-06-28 15:15:44 +0800 CST

php - replacing REGEX patterns with strings in array

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I have a block of text with embedded strings similar to "[ ]blk_foto_1[ ]" and I want to filter said block so that the result is a text where "[ ]blk_foto_1[ ]" is replaced by "image1.jpg", then I tried to do it with regular expressions but I don't achieve what I want, and the truth is that I think I'm going to die and I still won't fully understand how "regex" work. So far I have something like this:

$cadena = 'lorem vestibulum torquent at [***]blk_foto_1[***] orttitor habitasse mattis [***]blk_foto_2[***] platea taciti';
$patrones = [0=>'/[***]blk_foto_1[***]/', 1=>'/[***]blk_foto_2[***]/'];
$imagenes = [0 => 'imagen1.jpg', 1 => 'imagen2.jpg'];

echo preg_replace($patrones, $imagenes, $cadena);

But it returns me exactly the same original string with no changes.

My expectation is that the resulting string would replace '[ ]blk_photo_1[ ]' with 'image1.jpg' and so on, where the indices of $patterns match the indices of $images

php

1 Answers

  1. Best Answer

    You don't need to use preg_replace for that. str_replaceaccepts arrays as arguments:

    <?php

$cadena = 'lorem vestibulum torquent at [***]blk_foto_1[***] orttitor habitasse mattis [***]blk_foto_2[***] platea taciti';
$patrones = ['[***]blk_foto_1[***]', '[***]blk_foto_2[***]'];
$imagenes = ['imagen1.jpg', 'imagen2.jpg'];

echo str_replace($patrones, $imagenes, $cadena);

    I leave you a working fiddle

    PS: if what you want to replace is not literally like you showed us, and you really need to use a regular expression, you would have to escape the special characters (* [ and ] for starters).

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