wp_exif_frac2dec( string $str )

Convert a fraction string to a decimal.


Parameters

$str

(string) (Required) Fraction string.


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Return

(int|float) Returns calculated fraction or integer 0 on invalid input.


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Source

File: wp-admin/includes/image.php

function wp_exif_frac2dec( $str ) {
	if ( ! is_scalar( $str ) || is_bool( $str ) ) {
		return 0;
	}

	if ( ! is_string( $str ) ) {
		return $str; // This can only be an integer or float, so this is fine.
	}

	// Fractions passed as a string must contain a single `/`.
	if ( substr_count( $str, '/' ) !== 1 ) {
		if ( is_numeric( $str ) ) {
			return (float) $str;
		}

		return 0;
	}

	list( $numerator, $denominator ) = explode( '/', $str );

	// Both the numerator and the denominator must be numbers.
	if ( ! is_numeric( $numerator ) || ! is_numeric( $denominator ) ) {
		return 0;
	}

	// The denominator must not be zero.
	if ( 0 == $denominator ) { // phpcs:ignore WordPress.PHP.StrictComparisons.LooseComparison -- Deliberate loose comparison.
		return 0;
	}

	return $numerator / $denominator;
}


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Changelog

Changelog
Version Description
2.5.0 Introduced.

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