php strpos Fatal error: Call to undefined function when using more than one if statement

Question

To check for a products size i need to search through a simple string like: 32sdfsjkndgfjkdgndkj24020ldsfsfsd

To find the value inside the string i'm using strpos to look for the different sizes.

My current code is:

 if (strpos($size, "1875cl") || strpos($size, "01875l")) {
           $size = '18,75cl';
       } elseif (strpos($size, "20cl") || strpos($size, "020l") || strpos($size, "02l")) {
           $size = '20cl';
       }

The problem is when i use an if statement.

The first if is working great. Then when the elseif is checking for another value inside the string - also with strpos the scripts returns a fatal error saying that the function is undefined:

Fatal error: Call to undefined function strpos() in .....

Answer 1

This works, same as yours will work, the only possible way it would break is that the data is overwritten or there is wrong data in the $size variable.

You can sanitize the $size variable more by using preg_replace( '/[^a-zA-Z0-9]/', '', $size ); and if you use the code below you can save the $correctedSize variable with the name.

$prodNames = array( '\x0D\x0D\x0D   \n\rkajshdfsajkdhaksjd1875cladsas', '۞ ۩ εїз Ƹ̵̡Ӝ̵̨̄kajshdfsajkdhaksjd1875cladsas', 'kajshdfsajkdhaksjd20clcladsas','02lkajshdfsajkdhaksjdadsas', 'kajshdfsajkdhaksjd1875cladsas', 'kajshdfsajkdhaksjd1875cladsas', 'kajshdfsajkdhaksjd20clcladsas','02lkajshdfsajkdhaksjdadsas' );

foreach ( $prodNames as $prodNameRaw ) {
    $correctedSize = 0; 
    $prodName = preg_replace( '/[^a-zA-Z0-9]/', '', $prodNameRaw );

    if ( strstr( $prodName, '1875cl' ) || strstr( $prodName, '01875l' ) ) {
        $correctedSize = '18,75cl';
    } elseif ( strstr( $prodName, '20cl' ) || strstr( $prodName, '020l' ) || strstr( $prodName, '02l' ) ) {
        $correctedSize = '20cl';
    }
}